39 lines
683 B
Go
39 lines
683 B
Go
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package common
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import (
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"bytes"
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"text/template"
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)
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func isalphanumeric(b byte) bool {
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if '0' <= b && b <= '9' {
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return true
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}
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if 'a' <= b && b <= 'z' {
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return true
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}
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if 'A' <= b && b <= 'Z' {
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return true
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}
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return false
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}
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// Clean up AMI name by replacing invalid characters with "-"
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func templateCleanAMIName(s string) string {
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allowed := []byte{'(', ')', ',', '/', '-', '_'}
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b := []byte(s)
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newb := make([]byte, len(b))
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for i, c := range b {
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if isalphanumeric(c) || bytes.IndexByte(allowed, c) != -1 {
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newb[i] = c
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} else {
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newb[i] = '-'
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}
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}
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return string(newb[:])
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}
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var TemplateFuncs = template.FuncMap{
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"clean_ami_name": templateCleanAMIName,
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}
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